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Make segment data update work without rtree

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This commit is contained in:
Patrick Niklaus 2017-03-11 01:56:35 +00:00 committed by Patrick Niklaus
parent cec1f223e9
commit 2df02aa301
2 changed files with 128 additions and 85 deletions
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62
include/extractor/segment_data_container.hpp
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@ -63,30 +63,65 @@ template <bool UseShareMemory> class SegmentDataContainerImpl
{
}
// TODO these random access functions can be removed after we implemented #3737
auto &ForwardDuration(const DirectionalGeometryID id, const SegmentOffset offset)
auto GetForwardGeometry(const DirectionalGeometryID id)
{
return fwd_durations[index[id] + 1 + offset];
const auto begin = nodes.begin() + index.at(id);
const auto end = nodes.begin() + index.at(id + 1);
return boost::make_iterator_range(begin, end);
}
auto &ReverseDuration(const DirectionalGeometryID id, const SegmentOffset offset)
auto GetReverseGeometry(const DirectionalGeometryID id)
{
return rev_durations[index[id] + offset];
return boost::adaptors::reverse(GetForwardGeometry(id));
}
auto &ForwardWeight(const DirectionalGeometryID id, const SegmentOffset offset)
auto GetForwardDurations(const DirectionalGeometryID id)
{
return fwd_weights[index[id] + 1 + offset];
const auto begin = fwd_durations.begin() + index.at(id) + 1;
const auto end = fwd_durations.begin() + index.at(id + 1);
return boost::make_iterator_range(begin, end);
}
auto &ReverseWeight(const DirectionalGeometryID id, const SegmentOffset offset)
auto GetReverseDurations(const DirectionalGeometryID id)
{
return rev_weights[index[id] + offset];
const auto begin = rev_durations.begin() + index.at(id);
const auto end = rev_durations.begin() + index.at(id + 1) - 1;
return boost::adaptors::reverse(boost::make_iterator_range(begin, end));
}
auto &ForwardDatasource(const DirectionalGeometryID id, const SegmentOffset offset)
auto GetForwardWeights(const DirectionalGeometryID id)
{
return datasources[index[id] + 1 + offset];
const auto begin = fwd_weights.begin() + index.at(id) + 1;
const auto end = fwd_weights.begin() + index.at(id + 1);
return boost::make_iterator_range(begin, end);
}
auto &ReverseDatasource(const DirectionalGeometryID id, const SegmentOffset offset)
auto GetReverseWeights(const DirectionalGeometryID id)
{
return datasources[index[id] + offset];
const auto begin = rev_weights.begin() + index.at(id);
const auto end = rev_weights.begin() + index.at(id + 1) - 1;
return boost::adaptors::reverse(boost::make_iterator_range(begin, end));
}
auto GetForwardDatasources(const DirectionalGeometryID id)
{
const auto begin = datasources.begin() + index.at(id) + 1;
const auto end = datasources.begin() + index.at(id + 1);
return boost::make_iterator_range(begin, end);
}
auto GetReverseDatasources(const DirectionalGeometryID id)
{
const auto begin = datasources.begin() + index.at(id);
const auto end = datasources.begin() + index.at(id + 1) - 1;
return boost::adaptors::reverse(boost::make_iterator_range(begin, end));
}
auto GetForwardGeometry(const DirectionalGeometryID id) const
@ -150,6 +185,7 @@ template <bool UseShareMemory> class SegmentDataContainerImpl
return boost::adaptors::reverse(boost::make_iterator_range(begin, end));
}
auto GetNumberOfGeometries() const { return index.size() - 1; }
auto GetNumberOfSegments() const { return fwd_weights.size(); }
friend void

121
src/updater/updater.cpp
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@ -19,6 +19,7 @@
#include "util/string_util.hpp"
#include "util/timing_util.hpp"
#include "util/typedefs.hpp"
#include "util/for_each_pair.hpp"
#include <boost/assert.hpp>
#include <boost/filesystem/fstream.hpp>
@ -198,24 +199,6 @@ void updaterSegmentData(const UpdaterConfig &config,
// Folds all our actions into independently concurrently executing lambdas
tbb::parallel_invoke(load_internal_to_external_node_map, load_geometries);
// Here, we have to update the compressed geometry weights
// First, we need the external-to-internal node lookup table
// Now, we iterate over all the segments stored in the StaticRTree, updating
// the packed geometry weights in the `.geometries` file (note: we do not
// update the RTree itself, we just use the leaf nodes to iterate over all segments)
using LeafNode = util::StaticRTree<extractor::EdgeBasedNode>::LeafNode;
using boost::interprocess::mapped_region;
auto region = mmapFile(config.rtree_leaf_path.c_str(), boost::interprocess::read_only);
region.advise(mapped_region::advice_willneed);
BOOST_ASSERT(is_aligned<LeafNode>(region.get_address()));
const auto bytes = region.get_size();
const auto first = static_cast<const LeafNode *>(region.get_address());
const auto last = first + (bytes / sizeof(LeafNode));
// vector to count used speeds for logging
// size offset by one since index 0 is used for speeds not from external file
using counters_type = std::vector<std::size_t>;
@ -224,72 +207,96 @@ void updaterSegmentData(const UpdaterConfig &config,
counters_type(num_counters, 0));
const constexpr auto LUA_SOURCE = 0;
tbb::parallel_for_each(first, last, [&](const LeafNode &current_node) {
using DirectionalGeometryID = extractor::SegmentDataContainer::DirectionalGeometryID;
auto range = tbb::blocked_range<DirectionalGeometryID>(0, segment_data.GetNumberOfGeometries());
tbb::parallel_for(range, [&](const auto &range) {
auto &counters = segment_speeds_counters.local();
for (size_t i = 0; i < current_node.object_count; i++)
std::vector<extractor::QueryNode> query_nodes;
std::vector<double> segment_lengths;
for (auto geometry_id = range.begin(); geometry_id < range.end(); geometry_id++)
{
const auto &leaf_object = current_node.objects[i];
query_nodes.clear();
segment_lengths.clear();
const auto geometry_id = leaf_object.packed_geometry_id;
auto nodes_range = segment_data.GetForwardGeometry(geometry_id);
const auto segment_offset = leaf_object.fwd_segment_position;
const std::uint32_t u_index = segment_offset;
const std::uint32_t v_index = segment_offset + 1;
query_nodes.reserve(nodes_range.size());
for (const auto node : nodes_range)
{
query_nodes.push_back(internal_to_external_node_map[node]);
}
BOOST_ASSERT(u_index < nodes_range.size());
BOOST_ASSERT(v_index < nodes_range.size());
segment_lengths.reserve(nodes_range.size()+1);
util::for_each_pair(query_nodes, [&](const auto &u, const auto &v) {
segment_lengths.push_back(util::coordinate_calculation::greatCircleDistance(
util::Coordinate{u.lon, u.lat}, util::Coordinate{v.lon, v.lat}));
});
const extractor::QueryNode &u = internal_to_external_node_map[nodes_range[u_index]];
const extractor::QueryNode &v = internal_to_external_node_map[nodes_range[v_index]];
const double segment_length = util::coordinate_calculation::greatCircleDistance(
util::Coordinate{u.lon, u.lat}, util::Coordinate{v.lon, v.lat});
auto fwd_source = LUA_SOURCE, rev_source = LUA_SOURCE;
if (auto value = segment_speed_lookup({u.node_id, v.node_id}))
auto fwd_weights_range = segment_data.GetForwardWeights(geometry_id);
auto fwd_durations_range = segment_data.GetForwardDurations(geometry_id);
auto fwd_datasources_range = segment_data.GetForwardDatasources(geometry_id);
for (auto segment_offset = 0UL; segment_offset < fwd_weights_range.size(); ++segment_offset)
{
auto u = query_nodes[segment_offset].node_id;
auto v = query_nodes[segment_offset+1].node_id;
if (auto value = segment_speed_lookup({u, v}))
{
EdgeWeight new_segment_weight, new_segment_duration;
getNewWeight(config,
weight_multiplier,
*value,
segment_length,
segment_data.ForwardWeight(geometry_id, segment_offset),
u.node_id,
v.node_id,
segment_lengths[segment_offset],
fwd_weights_range[segment_offset],
u,
v,
new_segment_weight,
new_segment_duration);
segment_data.ForwardWeight(geometry_id, segment_offset) = new_segment_weight;
segment_data.ForwardDuration(geometry_id, segment_offset) = new_segment_duration;
segment_data.ForwardDatasource(geometry_id, segment_offset) = value->source;
fwd_source = value->source;
fwd_weights_range[segment_offset] = new_segment_weight;
fwd_durations_range[segment_offset] = new_segment_duration;
fwd_datasources_range[segment_offset] = value->source;
counters[value->source] += 1;
}
else
{
counters[LUA_SOURCE] += 1;
}
}
if (auto value = segment_speed_lookup({v.node_id, u.node_id}))
// In this case we want it oriented from in forward directions
auto rev_weights_range = boost::adaptors::reverse(segment_data.GetReverseWeights(geometry_id));
auto rev_durations_range = boost::adaptors::reverse(segment_data.GetReverseDurations(geometry_id));
auto rev_datasources_range = boost::adaptors::reverse(segment_data.GetReverseDatasources(geometry_id));
for (auto segment_offset = 0UL; segment_offset < fwd_weights_range.size(); ++segment_offset)
{
auto u = query_nodes[segment_offset].node_id;
auto v = query_nodes[segment_offset+1].node_id;
if (auto value = segment_speed_lookup({v, u}))
{
EdgeWeight new_segment_weight, new_segment_duration;
getNewWeight(config,
weight_multiplier,
*value,
segment_length,
segment_data.ReverseWeight(geometry_id, segment_offset),
v.node_id,
u.node_id,
segment_lengths[segment_offset],
rev_weights_range[segment_offset],
v,
u,
new_segment_weight,
new_segment_duration);
segment_data.ReverseWeight(geometry_id, segment_offset) = new_segment_weight;
segment_data.ReverseDuration(geometry_id, segment_offset) = new_segment_duration;
segment_data.ReverseDatasource(geometry_id, segment_offset) = value->source;
rev_source = value->source;
rev_weights_range[segment_offset] = new_segment_weight;
rev_durations_range[segment_offset] = new_segment_duration;
rev_datasources_range[segment_offset] = value->source;
counters[value->source] += 1;
}
// count statistics for logging
counters[fwd_source] += 1;
counters[rev_source] += 1;
else
{
counters[LUA_SOURCE] += 1;
}
}); // parallel_for_each
}
}
}); // parallel_for
counters_type merged_counters(num_counters, 0);
for (const auto &counters : segment_speeds_counters)